DD was in the bassinette next to our bed til around 3 months, then we planned to move to the cot. She hated it, so spent around a week sleeping in the bassinette in the cot to make the transition smoother. Seemed to work, but as I had the cot mattress on the lower level to accomodate the bassinette, we left it at the lower level to avoid another transition down the track lol

Having the cot set up in her room was really handy as a safe space to put her after nappy changes etc when washing hands, binning nappies, plus it does help with being familiar with the cot too I guess?